WO2010035003A3 - Improvements in and relating to assaying of waste - Google Patents

Improvements in and relating to assaying of waste Download PDF

Info

Publication number
WO2010035003A3
WO2010035003A3 PCT/GB2009/002289 GB2009002289W WO2010035003A3 WO 2010035003 A3 WO2010035003 A3 WO 2010035003A3 GB 2009002289 W GB2009002289 W GB 2009002289W WO 2010035003 A3 WO2010035003 A3 WO 2010035003A3
Authority
WO
WIPO (PCT)
Prior art keywords
detector
cosmic rays
types
volume
amount
Prior art date
Application number
PCT/GB2009/002289
Other languages
French (fr)
Other versions
WO2010035003A2 (en
Inventor
Mark Wilson
Original Assignee
Vt Nuclear Services Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vt Nuclear Services Limited filed Critical Vt Nuclear Services Limited
Priority to US13/121,139 priority Critical patent/US8729488B2/en
Priority to EP09736619A priority patent/EP2329295A2/en
Publication of WO2010035003A2 publication Critical patent/WO2010035003A2/en
Publication of WO2010035003A3 publication Critical patent/WO2010035003A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/26—Passive interrogation, i.e. by measuring radiation emitted by objects or goods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/167—Measuring radioactive content of objects, e.g. contamination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/346—Sorting according to other particular properties according to radioactive properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T3/00—Measuring neutron radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

A method and apparatus for investigating a volume of material for radioactive material potentially associated therewith is provided. The method comprises: providing an investigation location; providing a first detector, the interaction of one or more types of emission from radioactive material with the first detector causing the first detector to generate a signal; providing a volume of material at the investigation location; detecting signals from the first detector caused by the interaction of one or more types of emission from the radioactive material with the first detector; providing a second detector, the interaction of cosmic rays and/or one or more types of particle generated by cosmic rays with the second detector causing the second detector to generate a signal; detecting signals from the second detector caused by the interaction of cosmic rays and/or one or more types of particle generated by cosmic rays with the second detector; processing the signals from the first detector to provide information on the amount of radioactive material associated with the volume of material; processing the signals from the second detector to provide information on the amount of cosmic rays and/or one or more types of particle generated by cosmic rays incident on the investigation location; and correcting the information on the amount of radioactive material associated with the volume of material using the amount of cosmic rays and/or one or more types of particle generated by cosmic rays incident on the investigation location, thereby providing corrected information on the amount of radioactive material associated with the volume of material. The method and apparatus allow for far better correction of background signals arising from cosmic events and hence improved limits of detection.
PCT/GB2009/002289 2008-09-26 2009-09-28 Improvements in and relating to assaying of waste WO2010035003A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/121,139 US8729488B2 (en) 2008-09-26 2009-09-28 Assaying of waste
EP09736619A EP2329295A2 (en) 2008-09-26 2009-09-28 Improvements in and relating to assaying of waste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0817703.2A GB0817703D0 (en) 2008-09-26 2008-09-26 Improvements in and relating to assaying of waste
GB0817703.2 2008-09-26

Publications (2)

Publication Number Publication Date
WO2010035003A2 WO2010035003A2 (en) 2010-04-01
WO2010035003A3 true WO2010035003A3 (en) 2010-08-12

Family

ID=40019647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/002289 WO2010035003A2 (en) 2008-09-26 2009-09-28 Improvements in and relating to assaying of waste

Country Status (4)

Country Link
US (1) US8729488B2 (en)
EP (1) EP2329295A2 (en)
GB (1) GB0817703D0 (en)
WO (1) WO2010035003A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0817703D0 (en) 2008-09-26 2008-11-05 Vt Nuclear Services Ltd Improvements in and relating to assaying of waste
GB201020502D0 (en) * 2010-12-03 2011-01-19 Babcock Nuclear Ltd Improvements in and relating to processing
US9477005B2 (en) 2011-11-07 2016-10-25 Arktis Radiation Detectors Ltd Method for obtaining information signatures from nuclear material or about the presence, the nature and/or the shielding of a nuclear material and measurement setup for performing such method
WO2019123304A1 (en) * 2017-12-19 2019-06-27 Murphil S.R.L. A radiation detector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035173A (en) * 1956-04-09 1962-05-15 Commissariat Energie Atomique Neutron detectors
US6420712B1 (en) * 2000-07-03 2002-07-16 The Regents Of The University Of California Cosmic ray neutron background reduction using localized coincidence veto neutron counting
US20050105681A1 (en) * 2003-09-18 2005-05-19 Kejun Kang Method and device for monitoring position of radioactive materials in vehicles
US20060081787A1 (en) * 2004-10-19 2006-04-20 The Regents Of The University Of California. Absolute nuclear material assay
US20070001123A1 (en) * 2004-10-18 2007-01-04 Andrews Hugh R A method and apparatus for detection of radioactive materials

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2717693A (en) * 1949-09-06 1955-09-13 Fred T Holmes Method of and apparatus for sorting radiation emissive material
US4617466A (en) * 1985-02-04 1986-10-14 The United States Of America As Represented By The United States Department Of Energy Direct fissile assay of enriched uranium using random self-interrogation and neutron coincidence response
US4686368A (en) * 1985-04-30 1987-08-11 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for reading two-dimensional electrophoretograms containing β-ray-emitting labeled compounds
US5594250A (en) * 1995-04-03 1997-01-14 Condreva; Kenneth J. Method for detecting water equivalent of snow using secondary cosmic gamma radiation
WO2000042446A1 (en) 1999-01-11 2000-07-20 British Nuclear Fuels Plc Apparatus and methods for investigation of radioactive sources in a sample
US6509563B1 (en) * 1999-07-27 2003-01-21 Canberra Industries, Inc. Method for reduction in the interference of cosmic ray-induced neutron events in passive neutron coincidence and multiplicity counting
US7015475B2 (en) * 2003-05-06 2006-03-21 The Trustees Of Columbia University In The City Of New York Method and apparatus for material identification using characteristic radiative emissions
GB0605741D0 (en) * 2006-03-22 2006-05-03 Bil Solutions Ltd Improvements in and relating to detection
GB0817703D0 (en) 2008-09-26 2008-11-05 Vt Nuclear Services Ltd Improvements in and relating to assaying of waste

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035173A (en) * 1956-04-09 1962-05-15 Commissariat Energie Atomique Neutron detectors
US6420712B1 (en) * 2000-07-03 2002-07-16 The Regents Of The University Of California Cosmic ray neutron background reduction using localized coincidence veto neutron counting
US20050105681A1 (en) * 2003-09-18 2005-05-19 Kejun Kang Method and device for monitoring position of radioactive materials in vehicles
US20070001123A1 (en) * 2004-10-18 2007-01-04 Andrews Hugh R A method and apparatus for detection of radioactive materials
US20060081787A1 (en) * 2004-10-19 2006-04-20 The Regents Of The University Of California. Absolute nuclear material assay

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BEDDINGFIELD D H ET AL: "Distributed source term analysis, a new approach to nuclear material inventory verification", NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A:ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, ELSEVIER, AMSTERDAM, NL LNKD- DOI:10.1016/S0168-9002(01)02134-9, vol. 485, no. 3, 11 June 2002 (2002-06-11), pages 797 - 804, XP004361921, ISSN: 0168-9002 *

Also Published As

Publication number Publication date
WO2010035003A2 (en) 2010-04-01
GB0817703D0 (en) 2008-11-05
US20110215255A1 (en) 2011-09-08
US8729488B2 (en) 2014-05-20
EP2329295A2 (en) 2011-06-08

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